In a statement posted on the department's website Monday, Davis said his son was arrested in Plymouth, N.H., Friday night and charged with OUI.

New Hampshire State Police said the arrest was actually early Sunday morning and there were five passengers in the car with Davis, all of whom were under 21.

The five were charged with being a minor in possession of alcohol.

Phillip Davis' arrest comes less than two weeks after he was driven home by a Boston police officer because he appeared intoxicated after leaving the Boston Garden after a game.

"Like many families that struggle with substance abuse, we are reaching out to experts to get Phillip the help he needs," Davis said in the statement.

The arrest was first reported by Universal Hub in a Twitter post.

"Jane and I love our son very much and are relieved that he has decided to seek treatment. This sudden and public challenge is the most difficult issue we have dealt with as a family, but we pray that Phillip will persevere and overcome this setback. We are thankful that no one has been hurt in this situation," Davis said.

Lawyers for the Boston Marathon bomber prepared to rest their case Tuesday after an FBI fingerprint examiner testified that Dzhokhar Tsarnaev's fingerprints weren't found on any of the marathon bomb components, but his older brother's were.